package sfliu.com.Thread;

import java.util.ArrayList;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

class TaskWithResult implements Callable<String> {
	private int id;

	public TaskWithResult(int id) {
		this.id = id;
	}

	@Override
	public String call() throws Exception {
		return "result of TaskWithResult\t" + id;
	}
}

public class CallableDemo {
	public static void main(String[] args) throws InterruptedException,
			ExecutionException {
		// ExecutorService exec = Executors.newCachedThreadPool();
		ExecutorService exec = Executors.newFixedThreadPool(10);
		ArrayList<Future<String>> results = new ArrayList<Future<String>>();
		for (int i = 0; i < 10; i++) {
			//String a = exec.submit(new TaskWithResult(i)).get();
			//System.out.println(a);
			results.add(exec.submit(new TaskWithResult(i)));
			for (Future<String> fs : results) {
				try {
					System.out.println(fs.get());
				} catch (InterruptedException e) {
					System.out.println(e);
					return;
				} catch (ExecutionException e) {
					System.out.println(e);
				} finally {
					exec.shutdown();
				}
			}
		}
	}
}